Mandy Moore and Enrique Iglesias, who guest star, both have their songs featured in this episode. Iglesias sings "Alguien Soy Yo" (Spanish version of "Somebody's Me), and Moore's "Ladies' Choice" and "Nothing That You Are" can be heard in the background.
The patch on Gael's sweatshirt is a brand logo for the EVER clothing company; this logo appears several times through the series.
This episode has the first mentions of both the yellow umbrella and Barney's blog.
When Gael (Enrique Iglesias - Spaniard) is singing, he says the words "You are" in Spanish from Spain (Tu eres). Not in Argentinian (Vos sos). But it's a song, and songs are sung as they are, not translated.